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Couldn't resolve reference to Type [message #1015008]

Wed, 27 February 2013 07:56

Ankit Agarwal

Messages: 35
Registered: March 2012

Member

Hi,

In my Xtext generated editor i import a file and then use some attributes of that file. But i am getting the error as Couldn't resolve reference to Type 'Calculator.add'. at the line where i use it.

I have a Editor whose contents are something like :

import "D:/Calculator.myfile"

map Calculator.add {
$int a = 10;
$int b = 20;
}

My workflow is like:
// scoping and exporting API
fragment = scoping.ImportURIScopingFragment {}
fragment = exporting.SimpleNamesFragment {}

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Re: Couldn't resolve reference to Type [message #1015200 is a reply to message #1015008]

Wed, 27 February 2013 17:41

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

afaik the objects still have to be in the workspace so absolute imports wont work since the files will not be under the hood of the xtext builder

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Couldn't resolve reference to Type [message #1016140 is a reply to message #1015200]

Tue, 05 March 2013 08:17

Ankit Agarwal

Messages: 35
Registered: March 2012

Member

Hi,

The imported files are in the workspace. While import it does not give any error (I have a java Validation on that, if the file is not present, it gives an error on Editor import statement), but when i am trying to use some attribute of the imported file, it says that reference cannot be resolved.

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Re: Couldn't resolve reference to Type [message #1016273 is a reply to message #1016140]

Tue, 05 March 2013 19:03

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

if it is in the workspace why do you write import "D:/Calculator.myfile"

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Couldn't resolve reference to Type [message #1016884 is a reply to message #1016273]

Fri, 08 March 2013 04:07

Ankit Agarwal

Messages: 35
Registered: March 2012

Member

I tried with both the relative path as well as absolute path, but was getting the same error.
Anyways i got the problem fixed.

In DefaultLinkingService method getLinkedObjects, collected all scopes from imported files, then it looks for each string (In My case Calculator.add), converts it to QualifiedName and then matches if it exists in the scope. There was a catch here. while converting String to QualifiedName it created a new Object if it encounters a '.' in the String as mentioned in IQualifiedNameConverter. This only happened when a '.' was used as a separator or when an attribute or method was accessed by ClassName.MethodName or ClassName.Attribute. As it was a different object, so the object in the scope and this were never equal , hence the Type was not getting resolved.
To resolve this I had to bind a new QualifiedNameConverter that extended IQualifiedNameConverter.DefaultImpl in that class i had to override toQualifiedName method.
I dont know whether its correct or not but this got my problem fixed.

[Updated on: Fri, 08 March 2013 04:12]

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